Jigging mechanism



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JIGGING MECHANISM Filed Oct. 26, 1925 5 Sheets-Sheet 1 Nov, 19, 1929. M. J. LIDE JIGGING MECHANISM Filed oct. 2e, 1925 5 Sheets-Sheet 2 gfntol MHRTIN lJ'. LIDE.

Cinema? Nov. 19, 192.9. M. J. LIDE JIGGING MEGHANISM 5 Sheets-Sheet Filed Oct. 26. 1925 MHRTIN J. LIDE Patented Nov. 19, i929 UNITED ,Pari-:ENT rice j f MARTIN .'r. LIDE, 0F BIRMINGHAM, ALABAMA i JIGGING Mn'cnANIsM Applicatonled October 26, 1925. ',Seral o 65,01'0.

screen. In said Letters Patent the endlessV screen isshown` traveling both con-currently with and counter-currently to the outflow ofJ water with the fines or lighter material from Vthev jig, and in this application'protection is l5 sought forthe counter-current flow feature.

wherein the endless screen is traveling ina direction counter to the outflow of the water bearingV thel lighter material.- The importance of this counterflow arrangement is that the heavier matter is mechanically discharged by the movement of the screen at apoint remote from the dischargeV of the fines or lighter material, and I am enabled .to dis` pense with a discharge gatefor the heavier. material and the' mechanismf for operating and 'adjusting thesame, and can discharge very high percentagesl of heavier material without interfering with the efficient separa-y tion of the materials. Moreover, bydis'charg 30. ing the heavier material at: the opposite end of the moving screenfromzthe dischargeifor kthe light material'I find iti unnecessaryfto maintain a bed of the heavier. lmaterial on.

the screen at thev dischargeA gate" which is less traveling screen, such impulses being produced' Veither by valve? means, controlling the intermittent inflow of water impulses from anadjacent water tank or tanks, orby plungers, and such impulses'being admitted, either throughone or through oppositesidesf y v 1, trated in'Figs'.rl-V ands?, I' showa jig tank' 1.

of: the cjigftank. ,y

\ adjustable feed.

' essentialfwhere the discharge of both heavy l and light material occurs atthe same endl My invention further comprises the novel 'details of constructionfand arrangements of parts, which' in their preferred' embodiment only'ar'e illustrated in the accompanying drawlngsyandwhich` are hereinafter more' particularly describedl and' claimed.

According to the drawings z- Fig. 1 isa planview'; and l Fig. .2' a longitudinal cross-section on the line 2 2' of Fig. 1, showing oneV embodiment of my invention wherein the opposite imf f pulses-are admitted to a tank in which the endles'sf screen is formed by a chain.

Fig. 3 is: a view corresponding to Fig. 2 showing a'modied type ofjig with its screen formed by an ordinary perforated iiightor pan conveyor and provided with anl Fig.' Yis is a transverse cross-sectional viewthrough a j ig vmechanism having a single inlet port controlled b'y an oscillatory multiported. valve. l Y I Fig. 5 is 'ayiew' Corresponding toFig. 4f inwhich la plunger is provided inthe water tank forfdel-ivering the- ,water impulses to the jig tank;

Fig. 6 is a detail view of a guide for the upper flight of the traveling screen.

Fig; 7 is" across-sectional` view'on the line 7-7of Figi 6.' p

yfFig'.v 8 is a view correspondingto Fig. 7,and illustrating the type of guide lshown in'Figs. land 5."Y 'v j Fig. 9 is a" detail fragmental view. illus! inous plates; l .Y n,

Fig; 1011s an enlarged cross-sectional' View .tratin'g a screen formed by articulated fo'ram--l of the preferred type of guard overhanging-y the screen,`which isequippedwith means to' ,i rediviceVthe water'rflow between it .the

Similar reference'numerals" refer` to similar parts; throughout? ther drawings.

In the embodiment'of my invention illusl `2 i I Y 1,736,008

having an endless traveling screen 2 mounted therein upon polygonal pulleys 3, one of.

which has its shaft 4 driven by a pulley 5 from any other suitable and convenient source of power so as to cause a continuous travel of the screen at the desired rate of speed, according to the material undertreatment. The screen at its left hand end, Fig. 2,

foverhangs a chamber 6 containing a drag conveyor 7 or the like which is adapted to col-A f rllhefnfiaterial to be treated is delivered onto the screen adjacent to the discharge end for the lighter material `by means of a feed Y chute 10.

Alongside of the jig tankpreferably on each side thereof, I arrange two water tanks 11 which Vhave communication'with the jig tankthrough ports 12 disposed'below'the up per flight of thev screen. `These ports are elongated to have substantially the effective,

length of thatportion of theupper flight Vof the screen upon which theseparation is -tak'- ing place. In Fig. 2 I show a rotary valve` 13 turning in each port and 'adapted to admit impulses oty water into the'jig tank. ,These valves are driven by shafts 14 which are tensive with the effective lengthof the screen."

geared Vto-'a commongdr'iveshaft 15 so thatV theyrotate in unison and simultaneously admit opposing impulses of water to thegjig tank, which impulses are substantially coeX- 'I' ie screen tank has ahopper bottom 16 with a :valve controlled discharge 17 for the sludge' f and sediment-collecting therein.- f 1' In Fig. 4 the water tank 11jlias interposedtherein a multiported concave valve seat 18 over which an oscillatory multiported convex valve 19 works, being operated by a Ycrank arm 20 connected to Va reciprocable 'actuator 215 jectinatter of 'my pending'application, Serial '-No. 7 29,67 2,1iled Aug. 2,1924 and-isnot there- ,Y Y fore claimed as a part of this invention. The water tank'belowthe valve has full Communi 'cationwith the jig tank 1 through an open-` ing 34 in its sidel which extends the full width.

2 of the water tank4 and passes to a plane just below the upper flight of the screen. In thisv view the screen-is formed by a flight conveyor composed of perforated channels 22 mount ed on conveyor chains 23 by means of ordinaryflight attachments 24, (see Fig. 7), and

these chains are driven by sprocket Wheels 25 fast on shafts 26 mounted in bearings v27 attached to theadjacent side wallsof the `water tanks. Each'shaft-at one end projects Vthrough the outerwall .of either water tank,

or of both, where two are used, forV connection to a drive means, not shown. In this arrangement both the water and the jig tanks have a continuous hopper bottom 28 provided with any desired number of valved outlets 29.

In Figg I show the same type of jig and screen ,e construction described in `connection with` Fig. 4, except thatin place of the multiported impulse valve? 19 I substitute a plunger 30` driven by aconnectingrod 31 from an eccentric 32"on a driven shaft 33.`

duce'inipulses of water Whichfflow through the connecting port 34 between the water tank and jig tank, and act on the material on the screen. This port 34 preferably extends the full lengthlofthe watertank vand of the jig tank, which latter is closed at the lower porn tion of its ends by guards 35 a-nd 36, preferably formed of bent metal plates flanged at their sidesfor. attachmentto'thevvalls of` kThe guard ,36 at `the righthand end ofthe screenexten'ds from the b'ottomfof the tank 37'with` a reverse curvepand hugs the discharge end ofthe screen `and extends up .over and. beyond a vertical central line throughv its, drivingfsprocket. If desired a scraper blade 41 may bey adjustably mounted so :as to engage the top surface of the traveling screen` immediately in-'advance of theguard 36. Iv show'thisblade mounted onarms 42 pivotedto the sides-` ofthe lWater tanks and' engaged by springs 43 which yieldingly hold the scraper blade to itsworki `The '.uppe'rfflight of the screen is" shown travelin'g between guides v44 and V45 which are formed by angles attached to the sidesoffthe water tanks..` vIny order tor-v reduceA to a minimum the f tendency of ther water impulses to flush upbetweenthe -screen and guard 36, I prefer to provide' thev undersurface ofthe upper portion of the latter with a series of transverseserrations 46 (see Fig. 10),which are' disposed like-.saw teeth? kThe reciprocation of'this plunger will pro- 11o y t and yact' to retard'thev afflux of'waterfpast the Y end ofthey screen. i Iii-desired thelzsain'e' ar.

and adjustable hopper 48 slidableon guides 'Y 49 on the water tanks and a'daptedtofreceivthe `discharge from the chutev 47 ,soi that-the:I latter can be'dropped on,v the screen'at .the-

desired distance from the gate 40. In place of the lower rigid screen guide 45, as shown in Fig. 8, I may substitute a yieldable guide 50 supported on springs 51 surrounding bolts 52 depending from the upper guide 44.

As shown in Fig. 9 I may form the screen by perforated plates 53 interlocked by tongues 54 and slots 55 so as to form a transy versely articulated screen.

In Figs. 11 and l2 I show in detail a chain screen with the links 56 having shouldered ends interfitted and perforated to receivetransverse pipe connections 57 carrying washers 58 to spacev the links. The intermediate portions 59 of the links 56 of the chain are preferably cut away to reduce weight, as will be seen in Fig. 12, or in any other suitable way, but the ends of the links 56 are made thicker than the intermediate portions to give greater bearing surface on the guides.

It is to be understood that water is to be supplied to the water tanks by any suitable mechanism, not shown, which will maintain such difference in elevation between the water .Y tank or tanks and the jig tank as will prowill be periodically delivered into the jig tank and will be substantially co-eXtensive with the effective length of the screen, thus causing them to be substantially uniformly distributed so as to produce the most effective separation of the material on the screen, all as described more in detail in my Letters Patent aforesaid. The sameaction will be obtainedV by the opera-tion of the plunger or plungers 30. While the stratification or separation is proceeding in the manner desired on the screen, the latter is being driven in the direction which will cause its upper flight to move'counter to the direction of flow of the water from the jig'tank over the gate 40. The heavier material is thus discharged continuously at vthe right (Figz) while the fines or lighter material that is separatedrby the water impulses from the heavier material, is being continuously discharged with the overflow 'water at the left, thus giving all the advantages hereinbefore more fully point` A by moving it in a direction counter to that of the lighter matter which is carried ofi' with the overflow water.

Raving thus described my invention, what I claim as new and desire to securey by Letters Patent, is :y

l. A counter-current jig, comprising a jigv tank havingv an endless ltraveling screen mounted therein, means for feeding.y material to be treated on to one' end of the screen,- a

wier for the overflow ofthe lighter stratified material disposed at said end lof the screen,

Y and-a discharge chute forthe heavier stratified material` at the other endl of the screen, said chute having a b'ottompwall. closely overhanging the discharge end of the screen for guardin-g said screen. i.

2. A counter-current jig comprising ajig tank having an endless traveling screen. mounted therein,` axwiei for the overflow of the lighter stratified materialv disposed at one end of the screen, and: an overiow tank be? yond the wier separated` from the jig tank by a partition curved to conform to and overhang the adjacent end of the screen, saidl partition terminating at the base ofthe wier.

3.k A counter-current jig, comprising av tank having an endless traveling screen` mounted therein, there being at one endI the screen an overflow wier, means to `move the screens upper flight awayA from thcjsaidiwier, means to feed thefmaterial to be treated onto said screen adjacent to the wier, a curved end wall in the tank which is curved to conform to the discharge end of the screen and disposed to overhang same closely and form a discharge chute for the heavier stratified material, and means to deliver water impulses to the jig tank below the upper flight of the screen. v Y 4. A. jig tank according to claim 3, in which said wall forming a discharge chute is projuxtaposed thereto forming screen guards,`

and means to deliver water impulses below the upper flight of the screen, said means, y

comprising a water tank and communicating means between the water tank and the jig tank and extending substantially the distance j between the curved end walls.

6. In combination a water-tank, a valve controlled port extending the lengthofthe Vthe screen to discharge the heavy stratified reo i material thereon over the other end Wall of said chamber, and means to feed material to the screen adjacent to the wier. Y .Y

7. In a pulsating jig, a jig tank, an endless traveling screen flight submerged therel in, guide means vto support in position the said flight, end Walls for the tank overhanging the screen in closely spaced relation there-k toand Which eo-aet With the side Walls and the ends of the screen iiight to define a separating chamber, means to force pulsations of Water up through said screen iiight, and means to separately discharge the materials of different specific gravity stratified by said screen in said Chamber.

8. In a pulsating jig, a jig tank, an endless traveling screen flight submerged therein, yieldableguide means to support in position the said Hight, end Walls for the tank which co-aet with the side Walls and the ends of the yscreen flight to dene a separating chamber, means to force pulsations of Water up through said screen iiight, and means to separately discharge the materials of differ ent specific gravity stratified by saidscreen in said chamber.

In testimony whereof I affix my signature.

MARTIN J. LIDE'. 

